Why are there ads?

We would love to provide everyone an ad-free experience, but we do need to generate revenue to cover at least some
of our overhead. We're trying to be as reasonable as possible, and it also allows us to continue to offer you an
option to access KenKen puzzles for free. For those who prefer an Ad-Free playing experience, we have
an option for
just pennies-a-day and it can be canceled anytime. BONUS! KenKen Premium also allows you to Track Your Progress,
Join The Leaderboard, Save Puzzles, and more. Please consider this option for the best experience.

In addition, we continue to offer -- pro bono -- our KenKen Classroom
Program which provides free KenKen puzzles
and lessons to over 1 million students weekly. Revenue we raise from advertisements and subscription sales allow us
to keep the program going, plain and simple. So thank you for supporting these teachers and students by supporting
us. We all appreciate it.

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Welcome to KENKEN!

No matter what you're looking for — learning or fun — KenKen.com has it! Free online puzzles.
Cool math games. Number games. (More addictive than Sudoku or Kakuro? You decide!) Educational games for kids.
Visit our For Teachers section for math teacher resources, our free KenKen Classroom program, and a message
from Tetsuya Miyamoto, the Japanese educator behind KenKen. Miyamoto, chess master David Levy, and the rest of
Team KenKen have crafted these math puzzles into great games for learning and brain training. Need even more
KenKen? Check out our Will Shortz Presents books. Try our mobile app on iPhone and iPad or our Kindle version.
Play on the New York Times puzzle page and NCTM website. Regardless of why, how, or where you play, KenKen are
the math puzzles that make you smarter!